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Finding the Fourth Proportional to 3,679.70, 5,509.72 and 1,944.68

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Solution

The fourth proportional to 3,679.70, 5,509.72 and 1,944.68 is: 2,911.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.70 : 5,509.72 = 1,944.68 : x
  2. Step 2: Convert to fraction form
    3,679.70/5,509.72 = 1,944.68/x
  3. Step 3: Cross multiply
    3,679.70x = 5,509.72 × 1,944.68
  4. Step 4: Simplify right side
    3,679.70x = 10,714,642.29
  5. Step 5: Solve for x
    x = 10,714,642.29/3,679.70
  6. Step 6: Final answer
    x = 2,911.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.